Water-cooling tower



Dec. 23, 1 924. f 1,520,125

F. w. HAAS I WATER COOLING TOWER Original Filed y 12 1921 2 Sheets-Sheet1 F. W. HAAS WATER COOLING TOWER Original Filed y 12, 1921 2Sheets-Sheet 2 6 v. -T I*V n 1111 mi -111. L U 5 all T 6 III [5 29 r 6I0 1 5' Q 7 s l l2 INv:--ro|2 QTWM P awafl w Patented Dec. 23, 1924.

UNITED STATES FRED W. HAAS, OF PITTSBURGH, PENNSYLVANIA.

WATER-COOLING TOWER.

Application filed-July 12, 1921, Serial No. 484,102. Renewed October 80,1924.

To all whom it may concern:

Be it known that I, FRED W. HAAS, a citizen of the United States,residing at Pittsburgh, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Improvement inWater-Cooling Towers, of which the following is a specification.

My invention relates to water-cooling towers and its objects are toprovide improved means for the escape of heat therefrom, for bringingair into contact with the hot water spray, and for preventing the sprayor fine sheets of water from blowing out through the louvres. Otherobjects appear hereinafter.

Referring to the accompanying drawings, Fig. 1 is a central verticalsection of a watercooling tower containing some of the saidimprovements; Fig. 2, a top plan view of a portion of the tower; Fig. 3,a vertical section of Fig. 2 on the line IIIIII; Fig. 4, a side view ofone of the spraying devices: Fig. 5, a vertical cross-section of thecentral portion of the upper part of the tower; and Fig. 6, a sectionalfragmentary view showing a modification of my invention.

On the drawings, 1 and 2 designate respectively the upper and the nextlower sections of a water-cooling tower, the lower section being shownbroken away. I do not limit my invention to the use of two sections asit may contain only one section or several superposed sections. Eachsection has a number of sides 3 inclined inwardly and upwardly so as toform frustums of pyramids. The sides are louvres of any suitable type.

The top of section 1 is provided with a series of horizontal pans 4arranged side by side and supported in any suitable manner, as by thejoists or cross-pieces 5. Adjacent cross-pieces 5 are spaced apart so asto provide open spaces 6 between adjacent pans for the escape of heatfrom the section 1.

A water-receiving trou h 7 lies above the pans 4 and transversely tereof, and is supplied with water by the pipe 8. The water from thetrough flows over its sides into the pans 4. The u per edges of thetrough are, directly over t e pans 4, rovided with depressions ornotches forming teeth 9. The edges of the trough directly over thespaces between the pans are not depressed or notched, and a strip 10 islaid on the said edges so as to raise their height and prevent waterflowing over the trough into the same when the water sup lied to thetrough is temporarily increased.

In the section 2 the pans 4 need not be spaced apart. There are pendantfrom the bottoms of the pans 4 a number of spraying devlces 11, whichare downwardly tapered tubes of sheet-metal each having a sprayformingdeflector 12 supported at the lower end of a w1re 13 extending downthrough the tube and below its lower end. The hot water falling from thedeflectors becomes finely divided sprays which are condensed by the airpassing through the louvres, the

. condensed water from the pans in one section falling into the pans ofthe next lower section.

In order to further cool the spray, I supply numerous small jets of airto the interior of the sections. The jets may be supplied from anynumber of supply pipes lying in any dlrection in the sections, but Ihave shown them supplied by one vertical pipe 14 extending up throughthe sections and provided with numerous small holes 15 from which smalljets of air may flow into contact with the falling spray. Air issupplied 'to the pipe 14: by any suitable means, as the blower 16.

In case of strong winds blowing through the sections or if the blasts ofair from the plpe 14 cause the spray to be driven out through thelouvres, I may provide wire Screens within the sections, inclined in thegeneral direction of the adjacent sides and supported a few inches fromthe louvres. On Fig. 6, I have shown only one screen 17. The screensshould have a fine mesh, onefourth inch or smaller. The spray strikingthe screens adheres to it and flows downwardly. By reason of the smallsize of the mesh and the. inclination of the screens, the water whichpasses over the open spaces of the screens is'blown against the lowerwires of the spaces, and continues its way downward to the nexthorizontal wire. If the screens were vertical, the water clin 'ng to thehorizontal wires would be blown eyond the screen.

I claim 1. In a' water-cooling tower, a hollow section, a series ofopen-top pans supported at the top of the section and having sprayingeenl pans beilw sparated by open spaces, and a water supp y trou h lyingtransversely across the pans and a )ove the same having depressions inits edges directly over the pans. the edges directly over the s )acesbetween the pans not being depresse 2. In a \t'ater-cmiling tower, ahollow section, a series of open-top pans supported at the top of thesection and having spraying devices pendantfrom their bottoms, adjacentpans being separated by open spaces, a water supply trough lyingtransversely across the pans and above the same and having depressionsin its edges directly over the pans, the edges directly over the spacesbetween the pans not being depressed, and a strip covering the saidedges to allow the water-level to rise in the trough temporarily withoutoverflowing into the said spaces.

In a water-cooling tower, a hollow section having a louvreside, apan'supporled at the top of the section and having water sprayingdevices pendant from its bottom, and a relatively fine-mesh screenadjacent to the said side and inclined inwardly and upwardly.

4. In a liquid-cooling apparatus, a pan therein having an opening in itsbottom, a concave spreader below the opening arranged to receive intoits concavity the liquid from the opening and turn it into spray as itflows over the edge of the spreader.

Signed at Pittsburgh, Penna, this 8th day of. July, 1921.

FRED W. HAAS.

